How Much Heat Is Required to Convert 3kg of Ice at -9°C to Steam?

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SUMMARY

The discussion focuses on calculating the total heat required to convert 3 kg of ice at -9°C to steam at atmospheric pressure. The process involves four distinct steps: heating the ice to 0°C, melting the ice into water, heating the water to 100°C, and converting the water to steam. Each step requires specific energy calculations, which must be summed to obtain the final heat requirement. The participants confirm that adding the individual energies together is the correct approach.

PREREQUISITES
  • Understanding of thermodynamics, specifically heat transfer concepts.
  • Knowledge of phase changes, including melting and vaporization.
  • Familiarity with specific heat capacity and latent heat calculations.
  • Basic mathematical skills for summing energy values.
NEXT STEPS
  • Research specific heat capacity of ice, water, and steam.
  • Learn about latent heat of fusion and vaporization.
  • Study the first law of thermodynamics as it applies to phase changes.
  • Explore practical applications of heat transfer in real-world scenarios.
USEFUL FOR

Students in physics or chemistry, educators teaching thermodynamics, and professionals involved in thermal engineering or environmental science.

lenarass
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I got a question says "how much heat is requeired to change 3kg of ice at -9C to steam at atmospheric pressure?"

I must do step my step the energy of each step (energy needs to heat ice to 0,energy need to change ice to water, heat water at 100 and then make water to steam)
am going to find 4 indivitual energys.
Should i add them all together for the final result isn't it?
thanks
 
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lenarass said:
I got a question says "how much heat is requeired to change 3kg of ice at -9C to steam at atmospheric pressure?"

I must do step my step the energy of each step (energy needs to heat ice to 0,energy need to change ice to water, heat water at 100 and then make water to steam)
am going to find 4 indivitual energys.
Should i add them all together for the final result isn't it?
thanks

That's right.:biggrin:
 

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